Systems and methods for joint replacement
First Claim
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1. An orthopedic orientation system, for use in a joint procedure, comprising:
- an orthopedic fixture, comprising;
a base member having at least one attachment opening configured to receive a pin for securing the base member to a tibia,an adjustment block disposed adjacent to a side surface of the base member;
a movement device having a first end at least partially projecting into the side surface of the base member and extending therefrom toward the adjustment block;
the movement device enabling at least one degree of freedom of the adjustment block relative to the base member when the base member is in a fixed position and orientation relative to the tibia;
the adjustment block providing at least one additional and different degree of freedom of movement relative to the base member when the movement device is in a fixed position and orientation;
an elongated structure coupled to the adjustment block and extending away from the base member;
a first measuring device extending from a proximal portion of the base, the first measuring device configured to contact a location on a proximal surface of the tibia on a mechanical axis;
a second measuring device extending from a distal portion of the elongated structure, the second measuring device configured to be positioned adjacent to a distal surface to identify a orientation of a plane extending through the tibia which contains the mechanical axis;
a surgical orientation device coupled to the adjustment block and having an associated reference system, the surgical orientation device comprising;
a portable housing configured to connect to the tibia by way of the orthopedic fixture;
a sensor located within the housing, the sensor configured to monitor the orientation of the housing in the reference system, the sensor further configured to generate orientation data corresponding to the monitored orientation of the surgical orientation device;
an output device configured to inform a user of an orientation relative to a reference plane or axis.
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Abstract
Systems and methods for joint replacement are provided. The systems and methods include a surgical orientation device and at least one orthopedic fixture. The surgical orientation device and orthopedic fixtures can be used to locate the orientation of an axis in the body, to adjust an orientation of a cutting plane or planes along a bony surface, to distract a joint, or to otherwise assist in an orthopedic procedure or procedures.
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Citations
20 Claims
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1. An orthopedic orientation system, for use in a joint procedure, comprising:
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an orthopedic fixture, comprising; a base member having at least one attachment opening configured to receive a pin for securing the base member to a tibia, an adjustment block disposed adjacent to a side surface of the base member; a movement device having a first end at least partially projecting into the side surface of the base member and extending therefrom toward the adjustment block; the movement device enabling at least one degree of freedom of the adjustment block relative to the base member when the base member is in a fixed position and orientation relative to the tibia; the adjustment block providing at least one additional and different degree of freedom of movement relative to the base member when the movement device is in a fixed position and orientation; an elongated structure coupled to the adjustment block and extending away from the base member; a first measuring device extending from a proximal portion of the base, the first measuring device configured to contact a location on a proximal surface of the tibia on a mechanical axis; a second measuring device extending from a distal portion of the elongated structure, the second measuring device configured to be positioned adjacent to a distal surface to identify a orientation of a plane extending through the tibia which contains the mechanical axis; a surgical orientation device coupled to the adjustment block and having an associated reference system, the surgical orientation device comprising; a portable housing configured to connect to the tibia by way of the orthopedic fixture; a sensor located within the housing, the sensor configured to monitor the orientation of the housing in the reference system, the sensor further configured to generate orientation data corresponding to the monitored orientation of the surgical orientation device; an output device configured to inform a user of an orientation relative to a reference plane or axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 19)
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16. An orthopedic orientation system for use in a joint procedure, comprising:
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an orthopedic fixture having a base having at least one mounting channel having an anterior end disposed on an anterior side of the base and a posterior end disposed on the posterior side of the base, the channel configured for supporting said fixture adjacent a knee bone adjacent the joint, and an adjustment block coupled with the base by at least one hinge comprising a shaft projecting from one of the base and the adjustment block into a recess of the other of the base or adjustment block, the adjustment block adjustable in two substantially perpendicular degrees of freedom when the base is immobilized relative to the knee bone to adjust a medial-lateral angle and an anterior-posterior angle of said adjustment block; an elongated structure coupled to the adjustment block and extending away from the base; a landmark acquisition device coupled to the elongated structure, the landmark acquisition device configured to contact a distal portion of the knee bone, wherein a length between the base and the landmark acquisition device spans a length of the knee bone; a surgical orientation device comprising; a portable housing configured to connect to the knee bone by way of the orthopedic fixture; the surgical orientation device configured to monitor orientation in a reference system; an output device configured to inform a user of orientation information pertinent to a procedure on the joint. - View Dependent Claims (17, 18)
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20. An orthopedic orientation system for use in a joint procedure, comprising:
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an orthopedic fixture having a base having at least one mounting structure having an anterior end disposed on an anterior side of the base and a posterior end disposed on the posterior side of the base, the base configured for supporting said fixture adjacent a knee bone adjacent the joint, and an adjustment block moveably coupled with the base, the adjustment block configured to adjust a medial-lateral angle and an anterior-posterior angle of said adjustment block when the base is immobilized relative to the knee bone; an elongated structure coupled to the adjustment block and extending away from the base; a landmark acquisition device coupled to the elongated structure, the landmark acquisition device configured to contact a distal portion of the knee bone, wherein a length between the base and the landmark acquisition device spans a length of the knee bone; a surgical orientation device comprising; a portable housing configured to connect to the knee bone by way of the orthopedic fixture; the surgical orientation device configured to monitor orientation in a reference system; an output device configured to inform a user of orientation information pertinent to a procedure on the joint.
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Specification